Adjustable frame for poster boards



A ril 5 1927. p L. D. COOK ADJUSTABLE FRAME FOR POSTER BOARDS Filed Nov.10. 1924 -2 Sheets-Sheet 1 vul ar April 5 1927.

L. D. COOK ADJUSTABLE FRAME FOR POSTER BOARDS Filed Nov. 10, 1924 2Sheets-Sheet 2 Patented Apr. 5, 1927.

' UNITED STATES- L. D. cooK, OF MINNEAPOLIS, MINNESOTA.

ADJUSTABLE FRAME FOR POSTER BOARDS.

Application filed November 10, 1924. Serial No. 748,989.

My invention relates to supporting frames for poster boards and thelike, and has for its object to provide such a frame that is adjustablewhereby it may be very easily set up on uneven ground or on a roofhaving a pitch, and adjusted to proper form without cutting or fittingany of the parts thereof and without the use of bolts or similarfastening devices. Said frame may also, after having been set up, betaken down and again set up in a different place without damaging ormutilating any of the parts thereof. The invention further provides sucha frame that is very light, durable, strong and so braced as towithstand all wind strain.

To the above end, generally stated, the invention consists of the novelconstruction and arrangement of parts hereinafter described and definedin the claim.

In the accompanying drawings, which illustrate the invention, likecharacters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is a front elevation of the adjustable frame supporting asectional poster board;

Fig. 2 is a transverse vertical section taken on the line 22 of Fig. 1;

Fig. 3 is a detail View with some parts sectioned on the line 33 of Fig.2, on an enlarged scale;

Fig. 1 is a detail view with some parts sectioned on the line 441 ofFig. 2, on an enlarged scale;

Fig. 5 is a detail view with some parts sectioned on the line 5-5 ofFig. 2,0n an enlarged scale;

Fig. 6 is a detail view with some parts sectioned on the line 6-6 ofFig. 2, on an enlarged scale;

Fig. 7 is a perspective view of one of the anchor posts; and

Fig. 8 is a detail view principally in section showing one of theanchors for securing the uprights of the frame to aroof. 7

The adjustable frame includes uprights 9, braces 10, and struts 11, eachof which comprises upper and lower tubular members, the former of whichare telescoped into the latter. The members of each upright 9 arefrictionally secured in different longitudinal adjustments by a clamp 12in the form of a collar having tapered screw-threaded engagement withthe upper end of the lower member of said upright, which islongitudilongitudinaladjustments by clamps 14 and 15, respectively,similar to the clamp 12.

Each upright 9 and each brace 10 is securedto an individual anchor 16which, as shown, is in the form of a cement post having an extended base17 and a pair of laterally pro jecting lugs 18 near its top. The anchors16 are embedded substantially their full depth in the ground and theirbases 17 and lugs 19 securely *hold the same in position.

Each anchor 16 has a metal reinforcement 19 which, as shown, is in theform of a pipe that extends axially therethrough and thereabove, and hasa pair of downwardly'di verging arms 20 that extend into the lugs 18.The anchors 16 are arranged in front and rear rows and the lower membersof the uprights 19 are hingedly connected to the front row of saidanchors and the lower members of the braces 10 are hingedly connected tothe rear rows of said anchors. The hinge connection between each upright9 and its anchor 16 and between. each brace lO'and its anchor 16 isidentical the one to the other.

The hinge connection for one of the braces 10 is shown in Fig. 6, andcomprises apair of plugs 21 telescoped the one in the rein forcement 19in the respective anchor 16* and the other in the lowerend of therespective brace 10 and rigidly secured thereto. Formed with these plugs21 is a pair of overlapping hinge lugs 22 connected by a hinge bolt 23and a hub 24 on the lower hinge lug 22 which extends into a seat 25 inthe upper hinge lug 22.

The braces 10 for the upright 9 are located directly back of the same,inclined toward said uprights, and hingedly connected to their uppermembers near their upper ends by nut-equipped hinge bolts 26 whichetetend through outturned ears on clamping collars 27 and bores in theupper end of said braces which are flattened and extended between saidears. The clamping collars 27' encircle the upper member of therespective uprights 9 and are frictionally clamped thereon.

The lower members of the struts 11 are bolts 28 and clamping collars 29and the upper members of said struts are hingedly connected to theupper'members of the braces 10 by nut-equipped hinge bolts 30 andclamping collars 31. The ends of the struts 11 are flattened andextended between the ears of the clamping collars 29 and 31 and saidcollars are frictionally clamped onto the uprights 9 and braces 10.

hen the above described adjustable frame is mounted on a roof, theuprights 9 and braces 10 are secured by anchors 32 having laterallyprojecting feet 33 secured to a roof 34 by lag screws 35, as shown inFig. 8. The anchor 32 is identical with the lower hinge member 22.

It may be here stated that the clamping collars 12, 14 and 15 permit themembers to which they are applied to be adjusted to a fraction of aninch and then securely connected. The clamping collars 2'7, 29 and 31may also be secured to the members to which they are applied at anydesired longitudinally spaced point and turned so that connected membersmay be properly aligned. Obviously, the hinge connections between theuprights 9 and their anchors 1G permit said uprights to be aligned bymoving the same either forward or backward, and the hinge connectionsbetween these braces 10 and their anchors 1G permit said braces to beset in different oblique positions. Furthermore, the hinge connectionsfor the braces 10 permit the rear anchors 16 to be set where convenientat different distances from the front row of anchors 16.

The telescopical connection between the members of the uprights 9permits said uprights to be readily longitudinally adjusted to the sameheight when their anchors 16 are set at different elevations in unevenground, as shown in Fig. 1, or when the adjustable frame is mounted on aroof having a pitch. The braces 10 and struts 11 for the uprights may bereadily longitudinally adjusted to proper posit-ions and hold theuprights 9 irrespective of the contour of the ground or the pitch of aroof.

All of the uprights 9 are connected by Vertically spaced upper, lowerand intermediate cross tie bars 36 which may be of wood or steel. Thesecross tie bars 36 are secured to the uprights 9 by U-bolts 37 on whichare Washers 38 interposed between the uprights 9 and the backs of saidcross tie bars. The nuts on the U-bolts 37 are countersunk in the facesof the cross tie bars 36 so that said bolts or nuts do not projectoutward thereof.

A sectional poster board 39 is secured to the cross tie bars 36, andeach section thereof extends from the lower cross tie bar to the topcross tie bar. The sections of the poster board 39 are secured to all ofthe cross tie bars 36 by nails of other fastening devices. As shown,each section of the poster board 39 comprises a steel body member 40nailed or otherwise rigidly secured to a wooden frame 41 on the backthereof. This frame l1 may be made of steel, if desired, and in someinstances it might be desirable to secure the steel plate 40 directly tothe cross tie bars 36. While the poster board illustrated is made insections, the same may be entirely made of wood secured to the cross tiebars.

From the above description it is evident that after the anchors 16 arein position and the uprights 9 and braces 10 are secured thereto, saiduprights and braces, together with the struts 11, may be readilyadjusted to properly position the adjustable frame without cutting orfitting any of the parts thereof or without the use of bolts or similarfastening devices. This adjustment may take place irrespective of theelevation at which the anchors are located and the distance at which therear row of anchors is located back of the front row thereof. It is, ofcourse, understood that where the c011- tour of the ground is veryirregular, the upper members of the uprights 9 and braces 10 will haveto be in different lengths.

The above described adjustable frame, when once set up, may be takendown with out damaging or mutilating the same and again set up at adifferent location by simply readjusting the several parts thereof.

hat I claim is:

An adjustable frame for a poster board including a plurality of uprightsand braces, struts connecting the uprights and braces and securedthereto for vertical adjustment, each upright, brace and strutcomprising telescopically connected members, clamps connecting themembers of each upright, brace and strut in different longitudinaladjustment, and anchors to which the lower members of the uprights andbraces are hingedly secured for forward or backward tilting movement.

In testimony whereof I aflix my signature L. D. COOK.

